DE19941863A1 - Induction system for internal combustion engine has inlet channels in turbulence valve unit main body, turbulence valve in one channel, container chamber in main body, vacuum channel - Google Patents

Abstract

The system has first and second induction or inlet channels (130,132) in the main body (110) of a turbulence valve unit and a turbulence valve in one channel. The first and second inlet channels are connected to a single combustion chamber. A container chamber (170) formed in the main body between first and second inlet channel walls (138,140) and an outer wall (142) is connected to a branching pipe and the cylinder head. A vacuum input channel in the main body delivers suction pressure from the other channel to the container chamber.

Description

This invention relates to an intake system for an internal combustion engine. In particular, the invention relates to an intake system for a combustion engine that has fewer parts, is lighter in weight and has less space effectively uses an engine compartment. Furthermore, the invention provides for improved rigidity of a swirl valve assembly, an improved mounting stiffness of an intake manifold and an improved Reliability of a throttle body.

In internal combustion engines arranged in vehicles, there is a type of Motor, which has a device by an intake vacuum is operated. Furthermore, there is such a device of a type that one Has vacuum container for storing the suction vacuum. On such container protects against circumstances or individual cases in which the Intake negative pressure sufficient to operate the internal combustion engine in Dependency on various conditions in which the engine is running, impossible Lich can be guaranteed.

An example of such a device is a suction system that the An suction or inlet air, which is sucked into the combustion chamber, swirls and thus for improved combustibility with the resulting ones Reductions in fuel consumption and hazardous exhaust components. Some of the intake systems have branch pipes of the intake or intake manifold with the cylinder head of the engine via a Swirl valve assembly connected, and is also a swirl valve in the swirl valve assembly arranged.

An example of such a swirl valve assembly for the intake system is shown in FIG. 18. In Fig. 18, reference numeral 202 designates an intake system for a multi-cylinder internal combustion engine (not shown), reference numeral 204 a swirl valve assembly, reference numeral 206 a main body, reference numeral 208 a first intake port, and reference numeral 210 first and second intake and inlet channels. In the intake system 202 , the swirl valve assembly 204 has first and second intake and inlet channels 208 , 210 arranged in the main body 206 . The first and second intake channels 208 , 210 communicate with a single combustion chamber (not shown).

The vortex valve assembly 204 has swirl valves 212 which are provided in a passage of first and second intake passage 208, 210, ie, in the second suction or inlet channels 212 in Fig. 18. The vortex valves 212 are by means of a Swirl valve actuator (not shown) opens and closes. The swirl valve actuator is a vacuum operated device (not shown).

There is a vacuum container 214 which is separate from the main body 206 . The container 214 has a container chamber 216 , in which the suction is stored under pressure. The suction vacuum is introduced into the swirl valve actuator from the container 214 . The main body 206 has a negative pressure introduction passage 218 for introducing the suction negative pressure from the other passage from the first and second suction and intake passages, ie from the first suction and intake passage 208 in FIG. 18.

The vacuum introduction duct 218 and the container chamber 216 communicate with each other via a connecting pipe 220 . A check valve 222 is arranged substantially in the middle of the connecting pipe 220 so that the suction vacuum can be introduced into the container chamber 216 from the vacuum introduction channel 218 .

In the intake system 202 , an actuator control valve (not shown) is used to control the intake negative pressure supplied to the swirl valve actuator from the vacuum tank 214 . The swirl valves are then opened and closed to swirl the intake air that enters the combustion chamber, thereby providing improved combustibility.

Several examples of such an intake system are disclosed in the Japanese patent applications 64-11 358, 3-30 457 and 3-41 056 as disclosed below.  

In the suction system disclosed in application 64-11 358 is a container body provided that has a space defined by both an interior space of a collector on the upstream side of an intake or Inlet distributor and a partition is isolated or separated. At the A one-way valve is provided for the partition.

In the intake system disclosed in application 8-30457 is a sub pressure vessel arranged on branching elements, which in turn are arranged on the downstream side of the intake pipe. The Vacuum tank belongs to all cylinders. The vacuum tank is with an intake or inlet duct connected via a connecting duct. In a control valve is provided in the connecting channel.

In the intake system disclosed in application 3-41 056, a is closed sener space between a storage container that a suction or inlet Ex pansionskammer forms, and provided an element that an independent is common suction or inlet channel, which is in a curved or bent downward from the top of the storage container extends. The suction or inlet expansion chamber and the closed Rooms are connected to each other via a vacuum channel. By doing A non-return valve is arranged in the vacuum channel.

In the intake system 202 of conventional type, which is shown in FIG. 18, swirl valves 212 are arranged in the swirl valve assembly 204 . Furthermore, the separate vacuum container 214 stores the intake vacuum that is supplied to the swirl valve actuating element for opening and closing the swirl valves 212 . However, such a separate container 214 has disadvantages, namely an increased number of components or components, a higher weight and design restrictions.

As a result, there is a vacuum type suction system container, which is integral or in one piece either on the branch pipes of the Suction or inlet container or attached to the storage container, such as is described in the references cited above.

However, as in the case of the intake system 202 shown in FIG. 18, the disadvantage of a complex design occurs when the branch pipes of the intake manifold are connected to the cylinder head via the swirl valve assembly group 204 . This is because pipes must be routed from the vacuum tank located either on the branch pipes or on the storage tank to the swirl valve actuator that opens and closes the swirl valves 212 in the swirl valve assembly 204 .

To avoid or minimize the above disadvantages, one aspect relates to present invention an intake system for a multi-cylinder Ver internal combustion engine with branch pipes of the intake and intake manifolds, which is arranged on the cylinder head via a swirl valve assembly and with this is connected. The intake system has first and second intake or Inlet channels provided in a main body of the swirl valve assembly are, and a swirl valve that in a channel of first and second An suction or inlet channels is arranged, the first and the second suction or Inlet duct communicating with a single combustion chamber, one Container chamber provided in the main body and between the first and second intake and inlet channel walls and a peripheral wall is seen that surrounds the first and second intake and inlet channel walls. Form or limit the first and second intake and inlet channel walls the first and second suction and inlet channels, respectively, and the container chamber formed or limited and blocked that with one of the branches supply pipes and the cylinder head is connected. In the main body is a Vacuum inlet duct for introducing the suction vacuum from the the other channel from the first and second intake and inlet channels into the Container chamber provided.

Another aspect of the present invention relates to an intake system for a multi-cylinder internal combustion engine in which the swirl valve assembly a container chamber in training in at least two parts (i.e. a first and a second container chamber), the first container chamber communicates with the negative pressure inlet duct, the second container Chamber is separated or isolated from the first container chamber and the swirl valve assembly has a connecting pipe to connect to enable the first and the second container chamber together. Of further a check valve is arranged in the connecting tube so that the Intake pressure into the second container chamber from the first container chamber can be introduced.  

Yet another aspect of the present invention relates to an intake system for a multi-cylinder internal combustion engine in which the swirl valve assembly a connecting pipe and a vacuum discharge pipe, which on the Main body is provided, wherein the vacuum discharge pipe to suction vacuum from the second container chamber from a vacuum operated th device, wherein the connecting pipe and the vacuum discharge are arranged so that they take downward positions, when the swirl valve assembly is connected to the cylinder head.

In the suction system according to the present invention, the container chamber provided in the main body of the swirl valve assembly and between the first and second intake and inlet walls and the Peripheral wall formed. The container chamber is limited and blocks that either with the branch pipes of the intake or Inlet manifold or connected to the cylinder head. The vacuum on guide channel is in the main body of the swirl valve assembly Introducing the suction vacuum from the other channel from the first and second suction or inlet channels arranged in the container chamber. In The swirl valve assembly is the container chamber in at least first and divided second container chambers. The check valve is in the connector Extension tube provided so that there is a connection between the first and allows second container chambers. As a result, the negative pressure makes it container, which is provided integrally or in one piece in the swirl valve assembly is possible the need for a separate vacuum tank, a Extension console and a room in which a separate vacuum tank and a pipe is typically arranged to overcome. Furthermore, they are Connection pipe and the vacuum discharge pipe on the main body of the Swirl valve assembly arranged. The vacuum discharge pipe leads to that Intake vacuum to the vacuum actuated devices. Furthermore the connection pipe and the vacuum discharge pipe are arranged so that they take downward positions when the swirl valve construction group is connected to the cylinder head. As a result, this can Connection pipe and the vacuum discharge pipe can be arranged without using other components apply together.

In addition, the strength of the swirl valve assembly can be increased by the Be circumferential wall enlarged, which are around the first and second suction or Extends around inlet channel walls which the first and second intake and  

Form inlet channels. Thus, the intake or inlet manifold can be stiff on the Swirl valve assembly may be attached. As a result, vibrations are the by a throttle attached to the intake or inlet manifold body caused, controllable.

In the following, the invention is only exemplary and further in detail described with reference to the drawings, in which:

FIG. 1 is a plan view illustrating a main body of a swirl valve assembly for an intake system for an internal combustion engine according to a first embodiment of the present invention;

Figure 2 is a partially cut and partially exploded view showing the intake system.

Figure 3 is an exploded perspective view showing the assembly of the intake system.

Fig. 4 is a fragmentary cross-sectional view showing the intake system;

5 is a front view showing the vortex valve assembly.

Fig. 6 is a plan view showing the vortex valve construction group;

Fig. 7 is a side view showing the vortex valve assembly;

Fig. 8 is a bottom view showing the vortex valve construction group;

Fig. 9 is a plan view showing an intake manifold;

Fig. 10 is a front perspective view showing the intake manifold;

Fig. 11 is a front view showing the intake manifold;

Figure 12 is a schematic structural view showing an internal combustion engine.

FIG. 13 is a plan view showing a vortex valve assembly according to a second embodiment;

FIG. 14 is a plan view showing a vortex valve assembly of a third embodiment;

FIG. 15 is a plan view showing a vortex valve assembly according to a fourth embodiment;

FIG. 16 is a sectional view showing a vortex valve construction group according to a fifth embodiment;

Fig. 17 is a sectional view showing a swirl valve construction group according to a sixth embodiment; and

Fig. 18 is a plan view showing a swirl valve assembly according to the prior art.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 to 12 show a first embodiment. In Fig. 12, reference numeral 2 denotes a multi-cylinder internal combustion engine which is arranged in a vehicle. The engine 2 has a plurality of combustion chambers 10 , for example in this embodiment three combustion chambers 10 , which are formed by means of a cylinder block 4 , a cylinder head 6 and piston 8 . A Kopfab cover 12 has ignition coils 14 which are mounted therein to supply sparks (not shown).

The engine 2 has an intake manifold 28 and a swirl valve assembly group 30 which are sequentially connected together as an intake system 16 (ie, the intake manifold 28 is located upstream of the swirl valve assembly 30 ). The intake manifold 28 has an air cleaner 18 , an intake pipe 20 , a throttle body 22 , a storage tank 24, and branch pipes 26 . The swirl valve assembly 30 is connected to the cylinder head 6 . A throttle valve 32 is arranged in the throttle body 22 . Swirl valves 34 are provided in swirl valve assembly 30 . Furthermore, the engine 2 has an exhaust or exhaust manifold 38 , an exhaust or exhaust pipe 38 and a catalyst or catalytic converter 32 , which are connected in series to form an exhaust or exhaust system 36 .

The engine 2 is equipped with fuel injection valves 44 as a fuel system. The fuel injection valves 44 are attached to the vortex valve construction group 30 . A fuel pump 48 delivers fuel from a fuel tank 46 to the fuel injection valves 44 via a fuel tube 50 that forms a channel therein. Support air is supplied to the fuel injection valves 44 from the intake pipe 20 through a support air passage 52 . An assist air control valve 54 is disposed in the assist air passage 52 .

The fuel tank 46 is connected to a tank 58 via an evaporation channel 56 . The tank 58 is connected to a throttle body 22 via a cleaning channel 60 . A cleaning control valve 62 is provided in the cleaning channel 60 .

The engine 2 is equipped with an exhaust gas recirculation (referred to here as "EGR") channel 64 in order to enable a connection between the exhaust or exhaust manifold 38 and the storage tank 24 . An EGR control valve 66 , which is a vacuum operated device, is disposed in the EGR passage 64 . The EGR control valve 66 connects to an EGR working pressure channel 68 , through which the working pressure, ie the suction vacuum, is supplied. An EGR working pressure control valve 70 is provided in the EGR working pressure passage 68 . The EGR working pressure control valve 70 regulates the intake negative pressure supplied through the EGR working pressure passage 68 , and then opens and closes the EGR regulating valve 66 to regulate the size of the EGR.

The vortex valves 34 , which are arranged in the vortex valve assembly 30 , are opened and closed by means of a vortex valve actuating element 72 , ie by means of a vacuum-actuated device. The swirl valve actuating element 72 is connected to an actuating element working pressure channel 74 , through which the working pressure, ie the suction vacuum, is supplied. The actuator working pressure control valve 76 is provided in the actuator working pressure channel 74 . An actuator working pressure control valve 76 controls the intake negative pressure supplied through the actuator working pressure passage 74 and actuates the swirl valve actuator 72 , causing the swirl valves to open and close.

The components specified below are connected to a control means or a control device 78 : the ignition coil 14 , the fuel injection valves 44 , the fuel pump 48 , the auxiliary air control valve 54 , the cleaning control valve 62 , the EGR working pressure control valve 70 and the actuator working pressure control valve 76 . The control means 78 is further provided with a throttle opening sensor 80 , an intake or inlet pressure sensor 82 , an accelerator opening sensor 84 , a crank angle sensor 86 , a water temperature sensor 88 , an engine knock sensor 90 and an oxygen sensor 92 connected. A battery 96 is connected to the control means 78 via an ignition switch 94 .

When corresponding signals are received by the various sensors 80 , 82 , 84 , 86 , 88 , 90 and 92 by means of the control means 78 , the control means 78 then actuates and controls the ignition coils 14 , the fuel injection valves 44 , the fuel pump 48 , the assist air control valve 54 , the purge control valve 62 , the EGR working pressure control valve 70 and the actuator working pressure control valve 76 .

According to Fig. 2 to 4, an intake system 16 is illustrated in the engine 2, in which the downstream ,. Ends of the branch pipes 26 of the intake or intake manifold 28 are arranged on the cylinder head 6 and are connected to the latter via the swirl valve assembly 30 .

As shown in Fig. 9 to 11, the upstream ends of the branch pipes are in the suction or inlet manifold 28 26 (three branch pipes 26 in this embodiment) provided on the storage tank 24 and connected thereto. The other or downstream ends of the branch pipes 26 are arranged on an attachment flange 98 in the longitudinal direction of the attachment flange 98 and are connected to the latter. An attachment flange surface 100 is provided on the attachment flange 98 . The intake manifold 28 has a throttle body mounting seat 102 disposed on the storage tank 24 . The intake or inlet manifold 28 also has plate-shaped reinforcing ribs 104 , 106 ( Fig. 2), which are provided on the sides of the branch pipes 26 in the radial direction thereof. Numeral 108 denotes an EGR control valve mounting seat.

The mounting flange 98 of the intake or inlet manifold 28 is connected to the swirl valve assembly 30 by means of the mounting flange surface 100 , whereby it is in contact with a distributor contact surface 112 of a main body 110 of the swirl valve assembly 30 via a distributor seal 114 is brought.

The swirl valve assembly 30 is connected to the cylinder head 6 by means of a head contact surface 116 of the main body 110 , which is arranged against a module contact surface 118 of the cylinder head 6 via a head gasket 120 .

According to Fig. 4 are provided on the suction or inlet manifold 28 branching channels 124 of three branch pipes 26 at their upstream ends with a reservoir chamber 122 of the storage container 24 in connection. The other or downstream ends of branch channels 124 are divided into first and second branch channels 126 , 128 .

In FIGS. 5 through 8, the swirl valve assembly 30 is shown as having three pairs of first and second intake and inlet channels 130, 132 which are arranged in series in the longitudinal direction of the main body 110. The first and second intake channels 130 , 132 extend between the manifold interface 112 and the head interface 116 . Each pair of the first and second intake and inlet channels 130 , 132 communicates at its upstream ends with first and second branch channels 126 , 128 of the respective branch channel 124 . The swirl valves 34 are in one of the first and second intake or inlet channels 130 , 132 , ie in the second intake or inlet channel 132 in this embodiment.

The cylinder head 6 has three pairs of first and second intake ports 134 , 136 provided therein. Each pair of the first and second intake ports 134 , 136 at the upstream ends thereof are connected to the downstream ends of the corresponding pair of first and second intake ports 130 , 132 . The downstream ends of each pair of first and second intake ports 134 , 136 are connected to one of the three combustion chambers 10 provided in the engine 2 .

As shown in FIGS. 1 and 2, the swirl valve assembly 30 has three pairs of first and second intake and inlet channel walls 138 , 140 and a peripheral wall 142 provided in the main body 110 . The first and second intake and inlet channel walls 138 , 140 form the first and second intake and inlet channels 130 , 132 . The peripheral wall 142 surrounds the first and second intake and inlet channel walls 138 , 140 . The distributor contact surface 112 and the head contact surface 116 are arranged on both sides of these walls 138 , 140 and 142 in the direction of the first and second intake and inlet ducts 130 , 132 .

The peripheral wall 142 has transverse, opposite peripheral walls 144 , 146 and longitudinal, opposite peripheral walls 148 , 150 . The transverse opposing peripheral walls 144 , 146 face each other in the transverse direction of the main body 110 . The longitudinal circumferential, opposite peripheral walls 148 , 150 face each other in the longitudinal direction of the main body 110 . A bottom area 152 ( FIG. 2) is provided on the inside of the peripheral wall 142 . The bottom region 152 is connected to the transverse and longitudinal, opposite peripheral walls 144 , 146 and 148 , 150 in the vicinity of the head contact surface 116 .

The swirl valve assembly 30 has a swirl valve shaft 154 that is rotatably supported in the main body 110 . The swirl valve shaft 154 extends through the first and second intake and inlet channel walls 138 , 140 and the longitudinal, opposite peripheral walls 148 , 150 . The swirl valves 34 are provided on the swirl valve shaft 154 at locations where the swirl valve shaft 154 is inserted through the interior of the second intake or inlet channels 132 (ie, the swirl valves 34 are within the respective second intake or inlet channels 132 arranged).

As shown in Fig. 1 and 3, an actuator mounting extension 156 on the peripheral wall 148,110 vorgese hen at one end of the main body, and this approach extends the same in the longitudinal direction. The swirl valve actuator 72 is attached to the actuator attachment attachment 156 via an attachment bracket 158 .

The swirl valve actuator 72 has a membrane (not shown) and a rod 160 . The suction vacuum that acts on a pressure chamber (not shown) actuates the membrane. This membrane moves the rod 160 between a forward position and a retracted position. The rod 160 is connected to a crank 162 of the swirl valve shaft 154 , which shaft 154 extends through the circumferential wall 148 at one end of the main body 110 in the longitudinal direction thereof and which shaft 154 to the outside of the main body 110 protrudes near the peripheral wall 150 .

The swirl valve assembly 30 is further equipped with a fuel injection valve attachment boss 164 , an assist air duct tube 166 and a feed tube attachment boss 168 ( Fig. 3).

In the intake system 16 , the swirl valve assembly 30 has a container chamber 170 , which is provided in the main body 110 . The container chamber 170 is formed between the first and second intake wall 138 , 140 and the peripheral wall 142 . The container chamber 170 is limited and blocked by being connected to either the branch pipes 26 or the cylinder head 6 .

In this embodiment, as shown in FIGS. 1 and 2, the container chamber 170 is formed in the main body 110 and is delimited by the first and second intake and inlet channel walls 138 , 140 , the peripheral wall 142 and the bottom region 152 . The container chamber 170 is opened through the manifold interface 112 , and when the main body 110 is connected to the mounting flange 98 with the manifold seal 114 therebetween, the chamber 170 is closed or blocked to form an enclosed chamber.

A vacuum introduction passage 172 is in the main body 110 for introducing the suction vacuum into the container chamber 170 from the other passage of the first and second suction passages 130 , 132, or in this embodiment from the first suction passage 130 to that one end of the main body 110 is provided. To prevent oil mist from entering the negative pressure introducing passage 172 , the distributor contact surface 112 is recessed, whereby the introducing passage 172 is formed in the peripheral wall 148 at one end of the main body 110 (ie, the passage 172 is a groove in surface 112 ). When the main body 110 is connected to the mounting flange 98 through the manifold seal 114, the lead-in passage 172 is blocked thereby and forms a negative pressure lead-in passage.

In this embodiment, a partition wall 174 extends between the first intake wall 138 at one end of the main body 110 in the longitudinal direction thereof and the transverse opposing peripheral wall 144 at one end of the main body 110 in the transverse direction thereof. As a result, the container chamber 170 is formed in at least two parts including first and second container chambers 170-1 , 170-2 . The first container chamber 170-1 communicates with the negative pressure introduction passage 172 . The second container chamber 170-2 is separated from the first container chamber 170-1 by the partition 174 .

A connecting pipe 176 is provided on the transverse opposite peripheral wall 144 at one end of the main body 110 to enable communication between the first and second container chambers 170-1 , 170-2 . The connecting pipe 176 has first and second connecting pipes 178 , 180 and a hose 182 . The first connection pipe 178 connects to the first container chamber 170-1 . The second connection pipe 180 connects to the second container chamber 170-2 . The hose 182 connects the first and second connecting pipes 178 , 180 to one another. Furthermore, the connecting pipe 176 has a check valve 184 which is arranged essentially in the middle of the hose 182 . The check valve 184 allows the suction vacuum to be introduced into the second tank chamber 170-2 from the first tank chamber 170-1 .

As shown in FIGS. 6 to 8, in addition to the connection pipe 176, the swirl valve assembly 30 has a vacuum discharge pipe 186 provided on the main body 110 . This tube 186 leads the suction vacuum from the second container chamber 170-2 to the vacuum actuated devices, that is, to the EGR control valve 66 and the swirl valve actuator 72 .

As shown in FIG. 12, the vacuum discharge pipe 186 communicates with the EGR working pressure passage 68 and the actuator working pressure passage 74 through a negative pressure discharge passage 188 . As a result, the EGR working pressure passage 68 allows the intake negative pressure from the second tank 170-2 to be supplied from the EGR control valve 66 through the EGR working pressure control valve 70 . In addition, the actuator working pressure passage 74 allows the suction vacuum from the second tank 170-2 to be supplied from the swirl valve actuator 72 through the actuator working pressure valve 76 . In the swirl valve assembly 30 , the connecting pipe 176 and the vacuum discharge pipe 186 are arranged so that they assume downward positions when the swirl valve assembly 30 is connected to the cylinder head 6 .

The operation of this embodiment will be described next.

In the internal combustion engine 2 , the intake system 16 has the branch pipes 26 of the intake or intake manifold 28 in arrangement on the cylinder head 6 and in connection with this via the vortex valve assembly 30 . The swirl valve assembly 30 has the container chamber 170 , which is provided in the main body 110 and is formed between the first and second suction or channel walls 138 , 140 and the peripheral wall 142 . The container chamber 170 is limited and blocked by being connected to the mounting flange 98 .

The container chamber 170 of the swirl valve assembly 30 is formed in two parts comprising first and second container chambers 170-1 and 170-2. The swirl valve assembly 30 further includes the negative pressure introduction passage 172 provided therein for introducing the negative suction pressure from the first suction passage 130 into the first container chamber 170-1 . Further, the check valve is disposed in the connecting pipe 176,184, which chambers a connection between the first and second containers 170-1, 170-2 possible.

Accordingly, the intake system 16 allows the intake vacuum to be introduced from the first intake passage 130 into the first tank chamber 170-1 via the vacuum introduction passage 172 during operation of the engine 2 . The suction system 16 further allows the suction vacuum from the first container chamber 170-1 in the second container chamber 170-2 via the connecting pipe 176 and the check valve 184 is stored.

The suction vacuum is supplied from the second tank chamber 170-2 via the vacuum discharge pipe 186 . The vacuum discharge passage 188 then allows the suction vacuum to be supplied to the EGR control valve 66 and the swirl valve actuator 72 via the EGR working pressure passage 68 and the actuator working pressure passage 74 .

As described above, in the intake system 16, the swirl valve construction group 30, the container chamber 170 in arrangement in the main body 110 and in formation between the first and second intake or inlet channel walls 138 , 140 and the peripheral wall 142 . The container chamber 170 is limited and blocked in that it is connected to the mounting flange 98 . The container chamber 170 is divided into first and second container chambers 170-1 , 170-2 . Furthermore, the vacuum introduction channel 172 is provided in the swirl valve assembly 30 for introducing the intake vacuum from the first intake or inlet channel 130 into the first container chamber 170-1 . Furthermore, the check valve 184 is provided in the connec tion tube 176 , which holds the first and second container chambers 170-1 , 170-2 in communication with one another.

Thus, the vacuum tank chamber 170 , which is integrally provided in the swirl valve assembly 30 , makes it possible to avoid a separate vacuum tank, mounting bracket, etc. in the intake system 16 and to overcome the need for a space in which a separate vacuum tank and a pipe are arranged.

Furthermore, the swirl valve assembly 30 has the connection pipe 176 and the vacuum discharge pipe 186 arranged on the main body 110 . Furthermore, the connecting pipe 176 and the vacuum discharge pipe 186 are arranged to take downward positions when the swirl valve assembly 30 is connected to the cylinder head 6 . As a result, the connection pipe 176 and the vacuum discharge pipe 186 can be provided without meeting other components.

As a result, the intake system 16 provides fewer components, is lighter in weight, and uses space in an engine compartment effectively.

Furthermore, the swirl valve assembly 30 can be reinforced by means of the peripheral wall 142 which extends around the first and second intake and inlet walls 138 , 140 which form the first and second intake and inlet channels 130 , 132 . Thus, the intake manifold 28 may be rigidly attached to the swirl valve assembly 30 . As a result, the vibrations generated by the throttle body 22 attached to the intake manifold 6 are controllable.

Accordingly, the intake system 16 provides improved rigidity of the swirl valve assembly 30 , improved mounting rigidity of the intake manifold 6, and improved reliability of the throttle body 22 .

Fig. 13 shows an intake system 16 according to a second embodiment. In the suction system 16 according to this embodiment, an attachment hole 190 is provided in a partition wall 174 which separates a first container chamber 170-1 from a second container chamber 170-2 . Furthermore, a check valve 184 is arranged in the mounting hole 190 so that the suction negative pressure can be introduced into the second container chamber 170-2 from the first container chamber 170-1 .

In the suction system 16 according to the second embodiment, because the check valve 184 is arranged in the partition wall 174 which separates the first container chamber 170-1 from the second container chamber 170-2 , it is possible to omit the connecting pipe 176 which is otherwise outside the main body 110 would be ordered. Furthermore, the intake system 16 according to the present embodiment has fewer components, is lighter in weight, is compact in size, and as a result, makes the use of the space in an engine compartment more effective.

Fig. 14 shows an intake system 16 according to a third embodiment. In the suction system 16 according to the third embodiment, neither a partition wall 174 nor a vacuum introduction duct 172 is provided. The lack of a partition 174 results in the formation of a single container chamber 170 . Instead of the negative pressure introduction channel 172 , a check valve 184 is arranged in an attachment hole 190 so that the negative suction pressure can be introduced into the container chamber 170 from the first suction or inlet channel 130 . The attachment hole 190 is provided in the first intake wall 138 , which is disposed at an intermediate portion of a main body 110 in the longitudinal direction thereof.

In the suction system 16 according to this embodiment, a single container chamber 170 is formed, which creates an increased storage volume for the suction negative pressure. Furthermore, there is no need for the connecting pipe 176 to be arranged outside the main body 110 because the check valve 184 is provided in the first suction or inlet channel wall 138 on the central region of the main body 110 in the longitudinal direction thereof. As a result, the intake system 16 according to the present embodiment provides fewer components, is lighter in weight, and is compact in size, thereby effectively utilizing the space in an engine room.

In the intake system 16 according to the third embodiment, the check valve 184 is provided in the first intake wall 138 at the central portion of the main body 110 in the longitudinal direction thereof. Alternatively, as shown by means of lines dotted with two dots in FIG. 14, additional check valves 184 can be provided in the respective first intake or inlet channel walls 138 in the vicinity of the opposite longitudinal ends of the main body 110 . In this case, the check valves 184 are arranged in all walls of the first intake or inlet channel walls 138 . As a result, the negative pressure can be introduced into the container chamber 170 from the respective first suction or inlet channels 130 and can thus be effectively stored.

Fig. 15 shows an intake system 16 according to a fourth embodiment. In the intake system 16 according to this embodiment, walls 192,146 (which walls 144, 146 opposed to each other) extending between the transverse opposite peripheral walls 144. Each wall 192 is disposed between two adjacent pairs of first and second intake and inlet channel walls 138 , 140 . Thus, the transverse peripheral walls 144 , 146 are connected via the walls 192 . Furthermore, the walls 192 divide the container chamber into first, second and third container chambers 170-1 , 170-2 and 170-3 . Furthermore, a first, a second and a third mounting hole 190-1 , 190-2 and 190-3 are provided in the respective first intake and inlet channel walls 138 , which are from the first, the second and the third container chamber 170-1 , 170 -2 and 170-3 are surrounded. Further, a first, a second and a third check valve 184-1 , 184-2 and 184-3 are arranged in the first, the second and the third mounting holes 190-1 , 190-2 and 190-3 . Check valves 184-1 , 184-2, and 184-3 are opened to a higher, a middle, or a lower degree of suction vacuum from the first suction and inlet channels 130 into the respective container chamber at 170-1 , 170-2 and introduce 170-3 .

The suction system 16 according to the fourth embodiment is formed with the first to third container chambers 170-1 , 170-2 and 170-3 . The Ansaugsy stem 16 further has the first to third check valves 184-1 , 184-2 and 184-3 , which are arranged in the container chambers 170-1 , 170-2 and 170-3 , for introducing the suction vacuum with different degrees the intensity into the container chambers 170-1 , 170-2 and 170-3 . Thus, the suction vacuum with different degrees of intensity can be stored separately in the container chambers 170-1 , 170-2 and 170-3 . As a result, for any vacuum actuated device that requires a suction vacuum intensity other than working pressure, the suction vacuum can be supplied with the appropriate or required intensity, thereby ensuring reliable operation of such a device. In addition, in the same manner as in the previously described embodiments, it is possible for the intake system 16 according to the fourth embodiment to omit the connecting pipe 176 , which would otherwise be arranged outside the main body 110 . As a result, the intake system 16 according to the present embodiment has fewer components, is lighter in weight, is compact in size, and makes better use of the space in an engine room.

In the above-described embodiments, the swirl valve assembly 30 has the container chamber 170 formed in the main body 110 toward the manifold interface 112 . However, the present invention is not limited to this particular structure.

An intake system 16 according to a fifth embodiment is shown in FIG. 16 as an example. This embodiment has a swirl valve assembly 30 which includes a container chamber 170 formed on a main body 110 between first and second intake and inlet channel walls 138 , 140 , a peripheral wall 142 and an upper region 192 . In this embodiment, the container chamber 170 is opened via the head contact surface 116 . The peripheral wall 142 is disposed in the main body 110 and surrounds the first and second intake and inlet channel walls 138 , 140 . An upper region 192 is provided on the inside of the peripheral wall 142 in the vicinity of the distributor contact surface 112 . The upper region 192 is connected to the transverse, opposite peripheral walls 144 , 146 and the longitudinal, opposite peripheral walls 148 , 150 . The main body 110 is connected to the assembly contact surface 118 of the suction or inlet manifold 28 via the head gasket 120 , and the container chamber 170 is thereby defined and blocked or enclosed. Then the container chamber 170 can be formed towards the head contact surface 116 .

It goes without saying that the container chamber 170 , which is shown in FIG. 16, can communicate with the intake or inlet duct 130 as in the known embodiments, but would do so via the same arrangements or configurations that are connected to the Head touch pad 116 of main body 110 instead of manifold touch pad 112 as provided in the known embodiments.

In a suction system 16 according to a sixth embodiment of the invention, which is shown in Fig. 17, a swirl valve assembly 30 has a container chamber 170 in training in a main body 110 between the first and second suction or inlet channel walls 138 , 140 , a peripheral wall 142 and a bottom area 152 . The container chamber 170 is open via the manifold interface 112 . In addition, the intake manifold 28 has a manifold-side container chamber 196 formed in an attachment flange 98 by means of a container partition 194 .

The swirl valve assembly 30 is connected to the mounting flange 98 via a manifold seal 114 . Then, the container chamber 170 in the swirl valve assembly 30 and the distributor-side container chamber 196 are connected to one another via a connection hole 198 of the distributor seal 114 and thereby limited and blocked. As a result, the combined container chambers 170 and 196 have a larger storage capacity compared to the embodiments described above.

As described above, the intake system according to the present Invention of the vacuum container in the swirl valve assembly integral or provided in one piece. This structure makes it possible to have a separate one Vacuum tank, a mounting bracket etc. in the intake system omit and also the need for a place or space for one separate vacuum tank and a pipe to overcome. In addition, the Swirl valve assembly with higher strength by means of the peripheral wall be placed around the first and second intake and inlet channels extends around which walls the first and second suction or Form inlet channels. Thus, the intake manifold or inlet manifold can be rigid attached to the swirl valve assembly. As a result, the vibra tions emanating from the throttle body, which at the intake or inlet distributor is attached, controllable.  

As a result, the intake system has fewer components, it is weight lighter, and makes it more efficient to use the space in an engine compartment mer. Furthermore, the intake system enables improved rigidity of the Vortex valve assembly, improved attachment rigidity of the intake or Inlet manifold and improved reliability of the throttle body.

Although a particularly preferred embodiment of the invention is described in detail For purposes of illustration, it is to be understood that Changes or modifications to the disclosed device, including the otherwise arrangement of parts, within the scope of the present the invention lie.

Claims (11)

1. Intake system for a multi-cylinder internal combustion engine with branch pipes of an intake or intake manifold, which is connected to a cylinder head and is connected to this via a swirl valve assembly, the intake system comprising:
first and second intake or inlet channels ( 130 , 132 ), which are provided in a main body ( 110 ) of the swirl valve assembly ( 30 ), and a swirl valve ( 34 ) which is in a channel of first and second suction or Inlet ducts ( 130 , 132 ) is arranged, the first and second intake and inlet ducts ( 130 , 132 ) being connected to a single combustion chamber ( 10 );
a container chamber ( 170 ) provided in the main body ( 110 ) and formed between first and second suction or inlet channel walls ( 138 , 140 ) and a peripheral wall ( 142 ) which the first and second suction or inlet channel walls ( 138 , 140 ) surrounds, the first and second intake and inlet channel walls ( 138 , 140 ) forming the first and second intake and inlet channels ( 13 , 132 ), the container chamber ( 170 ) is limited and blocked in that it is connected to one of the branch pipes ( 26 ) and the cylinder head ( 6 ); and
a negative pressure introduction channel ( 172 ) which is provided in the main body ( 110 ) for introducing an intake negative pressure from the other channel from the first and second intake and inlet channels ( 130 , 132 ) into the container chamber ( 170 ). 2. Intake system for a multi-cylinder internal combustion engine according to claim 1, wherein the container chamber ( 170 ) is divided into first and second container chamber regions ( 170-1 , 170-2 ), the first container chamber region ( 170-1 ) with the vacuum introduction channel ( 172 ) is connected, the second container chamber region ( 170-2 ) is insulated or separated from the first container chamber region ( 170-1 ) and the swirl valve assembly ( 30 ) is a connecting tube ( 176 ) for forming a connection between the first and the second container chamber portion ( 170-1 , 170-2 ) and a check valve ( 184 ) provided in the connecting pipe ( 176 ) for suction in the second container chamber portion ( 170-2 ) from the first container chamber portion ( 170 -1 ) can be introduced from. 3. Intake system for a multi-cylinder internal combustion engine according to claim 2, wherein the swirl valve assembly ( 30 ) has a vacuum discharge pipe ( 186 ), which is provided on the main body ( 110 ), wherein the vacuum from pipe ( 186 ) Intakes negative pressure from the second container chamber area ( 170-2 ) from a vacuum operated device, the connecting pipe ( 176 ) and the negative pressure discharge pipe ( 186 ) are arranged so that they take downward positions when the swirl valve Module ( 30 ) is connected to the cylinder head ( 6 ). 4. Intake system for an internal combustion engine with an intake or inlet manifold structure with a plurality of branch pipes, each forming or limiting a channel therein, which is divided into a first and a second channel at the downstream ends of the respective branch pipe, the downstream ends of the branch pipes are connected to a cylinder head structure of the engine and to a plurality of combustion chambers, which are at least partially formed or bounded by the cylinder head structure, each branch pipe connecting to a single combustion chamber, the intake system comprising:
a swirl valve assembly ( 30 ) disposed between and connecting the downstream ends of the branch pipes ( 26 ) and the cylinder head structure ( 6 ), the swirl valve assembly ( 30 ) having a main body ( 110 ) therein a plurality of pairs of first and second adjacent intake and inlet channels ( 130 , 132 ), which are in communication with the first and second channels of a branch pipe ( 26 ) and the corresponding combustion chamber ( 10 ), and have a swirl valve ( 34 ), which is arranged in each first intake or inlet channel ( 130 ); and
the main body ( 110 ) forming first and second walls ( 138 , 140 ), the first and second intake and inlet passages ( 130 , 132 ) and projecting outwardly from a surface of the main body ( 110 ), and a first peripheral wall ( 142 ) which surrounds the first and second walls ( 138 , 140 ), the peripheral wall ( 142 ), the main body surface and the first and second walls ( 138 , 140 ) together forming or defining a container chamber ( 170 ) through one of the structures is closed, and wherein the main body ( 110 ) forms or delimits therein a negative pressure channel ( 172 ) for supplying negative pressure from one of the second suction or inlet channels ( 132 ) to the container chamber ( 170 ). 5. Intake system according to claim 4, wherein the container chamber ( 170 ) has first and second separate chamber areas ( 170-1 , 170-2 ) and the vacuum channel ( 172 ) connects to the first chamber area ( 170-1 ) and the Swirl valve assembly ( 30 ) further includes a connector tube ( 176 ) attached to the main body ( 110 ) that allows communication between the first and second chamber portions ( 170-1 , 170-2 ) and a check valve connected to the connector tube ( 176 ) ( 184 ), which allows the introduction of the suction vacuum from the first chamber region ( 170-1 ) into the second chamber region ( 170-2 ). 6. The intake system of claim 5, wherein a vacuum tube is attached to the main body ( 110 ), the vacuum tube communicating with the second chamber region ( 170-2 ) for supplying the vacuum stored therein to a vacuum actuated member the engine ( 2 ) manufactures. 7. Intake system according to claim 4, wherein the container chamber ( 170 ) has first and second chamber regions ( 170-1 , 170-2 ) and the vacuum channel connects to the first chamber region ( 170-1 ), the main body ( 110 ) a partition ( 174 ) projecting outwardly from the main body surface and arranged to separate the first chamber portion ( 170-1 ) from the second chamber portion ( 170-2 ), and a check valve ( 184 ) on the partition ( 174 ) is attached and the introduction of the negative pressure from the first chamber region ( 170-1 ) into the second chamber region ( 170-2 ) is permitted. 8. Intake system according to claim 4, wherein the vacuum channel is formed or limited in the second wall of a second intake or inlet channel ( 132 ) and a check valve ( 184 ) is connected to the vacuum channel and the introduction of the vacuum from one second suction or inlet channel ( 132 ) allowed into the container chamber ( 170 ). 9. An intake system according to claim 4, wherein the pairs of first and second intake and inlet channels ( 130 , 132 ) are separated from each other by a partition ( 174 ) protruding outwardly from the main body surface, the trend walls ( 174 ) divide the container chamber ( 170 ) into a plurality of chamber regions ( 170-1 , 170-2 , 170-3 ), each of which is connected to a corresponding pair of first and second intake and inlet channels ( 130 , 132 ), respectively the second walls of the respective second intake and inlet channels ( 132 ) each form or limit a vacuum channel therein, the swirl valve assembly ( 30 ) further comprises a check valve ( 184 ) which is connected to each of the vacuum channels and which introduces the intake vacuum permitted from the respective second intake or inlet channel ( 132 ) into the corresponding chamber area. 10. Intake system according to claim 4, wherein the container chamber ( 170 ) is closed and sealed by means of a surface which is formed on a mounting flange ( 98 ), which is provided at the downstream ends of the branching pipes ( 26 ). 11. Intake system according to claim 4, wherein the container chamber ( 170 ) is sealed and sealed by means of an attachment surface of the cylinder head structure ( 6 ).